In the secret level, "A New Hope," there is a corridor that branches off to the right of the first locked door. Inside, you'll find a jumble of blocks. If force manipulated correctly, they will spell out "LEGO."
Yellow blocks- First up are the yellow blocks. First, take the long piece and force manipualte it. Then do the same on the short blocks to spell an "L."
Blue blocks- Go to the blue blocks next to the "L." First, force manipulate the long piece, then a short piece. Next, manipulate the medium sized piece, and another short piece. Finally, put another long piece on top. This will create an "E."
Green blocks- This is the first time you'll encounter bridged pieces, which are pieces with a grey, slim piece between. First, force manipulate a long piece, then a bridged piece. On top of the bridge piece, place the short pieces. Then manipulate the last green long piece to fit on top of the short ones. This spells out a "G."
Red blocks- This one is pretty simple. First, manipulate a long red piece. Then do the same to three bridge pieces. After the bridge pieces, manipulate the final long piece to spell out an "O."
After a few seconds, an explosion will be heard, and many blue studs and hearts will rain down at random spots in the room. There are so many, you may need a partner to pick them all up!
Cheats for behind Dexter in Dexter's Diner
In each of the rooms in Dexter's Diner you will find some stools situated in the corners of the room. You'll notice that they don't give you any studs as they cannot be broken, and the only interaction is using your Force powers to flip them over. But it is possible to break them, netting you the many studs they contain.
To be able to make these stools breakable you have to use your Force powers to flip over EVERY stool in that room. You have to do it quick enough so that all of them are still flipped over because after a while they will flip themselves back. Once you've got all of them turned over they will stay flipped over, and with ONLY A LIGHTSABER can you break them open for their studs. You have to do the same process for the other rooms in order to make the stools there breakable.
Personally, I prefer to break all the stools in the diner for all of the rooms rather than getting studs from the other objects (such as the lights). It seems more efficient and least likely to have the studs spew all over the room.
After achiveing true jedi status on all levels, in every episode, (You have to collect a number of studs to fill up a meter) after you do so for every level, a mystery level door next to the episode selection doors will be unlocked, (There should be a ? sign on the door before unlocking it) letting you buy, Stormtrooper, Darth Vader, Princess Leia, and rebel trooper at dexter's diner, after beating the level.